IDY10220 SECURITE High Seas Forecast for Western METAREA 10 12S TO 30S BETWEEN 90E AND 125E, AND 30S TO 50S BETWEEN 80E AND 129E Issued by the Australian Government Bureau of Meteorology For 24 hours commencing 1100 UTC 17 January 2026 Part 1 Warnings Refer to latest warnings for details of the area affected. Melbourne Storm Force Wind Warning 11. Part 2 Situation at 170600 UTC Low [1] 1001hPa near 16S111E. Forecast low [1] 1004hPa near 17S109E at 181200UTC. Low [2] 998hPa near 40S120E. Forecast low [2] 1007hPa near 42S127E at 181200UTC. Cold front [1] 40S120E 46S120E 50S123E. Forecast cold front [1] near 53S128E 50S125E at 172100UTC and then moving south of area. Cold front [2] 43S101E 46S104E 50S104E. Forecast cold front [2] near 36S106E 40S114E 46S121E 50S122E at 181200UTC. Part 3 Forecast Refer to latest warnings for boundary of affected area and type of weather system. East of line 13S125E 12S124E: Southwesterly quarter winds. Wind speeds 20/30 knots. Rough to very rough seas. low to moderate swell. East of line 21S106E 24S106E 32S115E: Southeasterly quarter winds 20/30 knots. Rough seas. Low to moderate swell. South of line 40S080E 37S094E 36S122E 41S129E, outside of warning area: Northerly quarter winds, shifting northwesterly quarter within 180nm east of cold front [1], becoming southwesterly west of cold front [1], turning northwesterly within 630nm east of cold front [2], shifting westerly west of cold front [2], and turning clockwise within 240nm of low [2]. Wind speeds 20/33 knots. Rough to very rough seas. Moderate to heavy swell. Remainder: Winds not exceeding 25 knots. Moderate to rough seas. Low to moderate swell, increasing to moderate to heavy swell south of line 36S095E 36S080E. Rain areas, scattered showers and isolated thunderstorms mostly within 180nm of fronts, east of line 13S125E 12S124E, and within 300nm of low [2] and 240nm of low [1]. Heavy at times within 180nm of the northwestern quadrant of low [1]. Visibility reducing below 2nm in precipitation. Please be aware Wind and wave forecasts are averages. Wind gusts can be 40 per cent stronger than the forecast, and stronger still in squalls and thunderstorms. Maximum waves can be twice the forecast height. WEATHER MELBOURNE The next routine forecast will be issued at 20:00 UTC Saturday.